Solid PTFE Ball | 5mm to 310mm Diameter | ISO 3290 Grade G10 | Teflon Ball
Virgin PTFE balls are solid, high-purity spheres manufactured from brand-new, non-reprocessed fluoropolymer resins (such as GFL Inoflon or SRF Flonio). Designed as high-performance valve check balls, floating check spheres, and reciprocating pump spheres, these balls are completely free of microscopic voids or reclaimed scrap, making them the industry standard for chemical dosing pumps, AODD pump check valves, semiconductor manufacturing, and cryogenic fluid control (including LNG piping systems). Because they are molded under calculated compaction pressures of 20-25 MPa and sintered under precise thermal profiles, they maintain superior physical properties, including zero porosity, high tensile strength, and excellent structural integrity. Typical B2B buyers include valve OEMs, pump manufacturers, food processing equipment builders, and chemical process engineers who require extreme chemical inertness and reliable leak-free sealing. Standard sizes are maintained in stock for immediate shipment, while custom runs can be produced to order.
Applications
Chemical Ball Valves
Used as the primary sealing sphere in ball valves handling corrosive acids, bases, and aggressive chemical reagents.
Cryogenic Liquid Handling
Serves as check and flow control balls in sub-zero applications including liquid nitrogen and cryogenic gas assemblies.
Food & Beverage Equipment
Provides sanitary, non-contaminating, and FDA-compliant valve components for food processing and bottling lines.
Diaphragm & Piston Pumps
Used in reciprocating pumps to control fluid flow while resisting abrasion and aggressive chemical wear.
Electrical Isolators
Acts as insulation spheres in high-voltage industrial assemblies and electrical test equipment.
OEM Special Assemblies
Custom turned spheres designed for specialized machinery requiring friction-free spherical movement.
Features
Chemical Resistance
Chemically inert to almost all industrial acids, bases, and solvents, except molten alkali metals and gaseous fluorine.
Low Friction
Extremely low coefficient of friction (0.04 to 0.10) ensures low torque operation and minimal wear in ball valve seats.
Non-Stick Surface
Excellent anti-adhesive properties prevent residue build-up, ensuring clean operation in sanitary lines.
Temperature Range
Retains high flexibility and physical properties from cryogenic -200°C up to elevated temperatures of +260°C.
Precision Machined
Sphericity machined to tight tolerances for leak-free sealing in critical industrial environments.
FDA Compliance
Pure virgin resin naturally complies with FDA CFR 21 part 177.1550 for food and pharmaceutical contact.
High Dielectric Strength
Provides excellent electrical insulation, making them suitable for electronic instrumentation.
Solid Sphericity
In-house compression molding guarantees a void-free structure with uniform density throughout the sphere.
Technical Specifications
| Property | Value |
|---|---|
| Material | 100% Virgin PTFE (Polytetrafluoroethylene) |
| Diameter Range | 5mm – 310mm |
| Large Sizes | 150mm, 200mm, 250mm, 300mm, 310mm available |
| Type | Solid (Hollow available on request) |
| Grade | ISO 3290 Grade G10 |
| Temperature Range | -200°C to +260°C |
| Friction Coefficient | 0.04 – 0.10 (self-lubricating) |
| Specific Gravity | 2.13 – 2.19 g/cm³ |
| FDA Compliance | Yes — food and pharmaceutical grade |
| Export Markets | UAE, Germany, USA, Japan, Singapore, Brazil, Turkey, Middle East |
Available sizes
We manufacture metric and fractional inch virgin PTFE balls. The following table showcases standard diameters. Custom dimensions are fabricated to print.
| Size | Metric | Inch | Tolerance |
|---|---|---|---|
| 1/4″ | 6.00 mm | 0.250″ | ±0.05 mm |
| 3/8″ | 9.52 mm | 0.375″ | ±0.05 mm |
| 1/2″ | 12.70 mm | 0.500″ | ±0.08 mm |
| 3/4″ | 19.05 mm | 0.750″ | ±0.08 mm |
| 1″ | 25.40 mm | 1.000″ | ±0.10 mm |
| 2″ | 50.80 mm | 2.000″ | ±0.15 mm |
| 4″ | 100.00 mm | 4.000″ | ±0.25 mm |
| 12-1/5″ | 310.00 mm | 12.205″ | ±0.50 mm |
Manufacturing Process
Material Selection
We utilize 100% pure virgin PTFE fluoropolymer resin without fillers or reprocessed scrap to ensure maximum purity and consistent density.
Compaction Molding
The raw PTFE powder is filled into precision dies and compacted at high pressures of 20–25 MPa inside our specialized in-house press room.
Controlled Sintering
Molded green preforms are heated under a computerized temperature curve up to 370°C in programmable ovens to bond the polymer chains.
Precision Machining
Sintered blanks are turned on high-speed lathes, centerless ground, and polished to achieve high sphericity and ultra-smooth finishes.
Inspection
Each production run undergoes 100% dimensional check, roundness verification using dial gauges, and void detection inspections.
Material comparison
This table highlights the differences between pure virgin PTFE balls and filled PTFE alternatives to help you choose the right grade.
| Characteristic | Virgin PTFE | Filled PTFE |
|---|---|---|
| Chemical Purity | Maximum (100% Pure, FDA compliant) | Lower (fillers can react with specific chemicals) |
| Wear Resistance | Moderate (susceptible to creep under high load) | High (strengthened by glass, carbon, or bronze) |
| Coefficient of Friction | Extremely Low (0.04 - 0.10) | Slightly Higher (0.08 - 0.18 depending on filler) |
| Sphericity & Finish | Excellent (micro-polished to smooth gloss) | Moderate (rougher texture due to embedded fibers) |
Compliance & Standards
IEC registered. FDA-compliant for food and pharmaceutical contact. ISO 3290 Grade G10. Regular export to UAE, Germany, USA, Japan, Singapore, Brazil, Turkey, Saudi Arabia, Qatar, Oman, and Middle East. 310mm PTFE Balls available — contact us for large-diameter requirements.
Frequently Asked Questions
What is the largest PTFE Ball you manufacture?
We manufacture Virgin PTFE Balls up to 310mm diameter — one of the largest sizes available from any PTFE Ball manufacturer globally. Most suppliers cap at 100mm to 150mm. Our 310mm PTFE Ball capability serves large-bore ball valves, check valves, and industrial pump seats that most suppliers cannot supply.
What ISO grade are your PTFE Balls manufactured to?
Our PTFE Balls are manufactured to ISO 3290 Grade G10 — a precision grade ensuring consistent diameter accuracy, roundness, and surface finish for reliable valve seating and sealing performance.
What is the difference between a PTFE Ball and a Teflon Ball?
They are the same product. Teflon is a brand name for PTFE by Chemours (formerly DuPont). A Teflon Ball and a PTFE Ball refer to the same material — Polytetrafluoroethylene. Our Virgin PTFE Balls deliver identical performance at direct-factory export pricing.
Do you supply hollow PTFE Balls?
Yes. While solid PTFE Balls are our standard product, hollow PTFE Balls are available on request for float, check valve buoyancy, and weight-reduction applications. Sizes up to 310mm available in hollow construction.
What is the difference between Virgin PTFE and Reprocessed PTFE?
Virgin PTFE is made from brand-new fluoropolymer powder, ensuring maximum chemical resistance, tensile strength, and zero voids. Reprocessed PTFE is blended with sintered scrap, which degrades physical properties and introduces microscopic voids.
Do you offer test certificates for material composition?
Yes. We provide material test certificates (MTC) stating polymer purity, specific gravity, and FDA compliance indicators with every batch upon request.
What is the typical B2B lead time for virgin PTFE ball orders?
Standard stock sizes ship within 24 to 48 hours. Custom size runs or large OEM batches typically take 10 to 15 business days depending on volume.
What compaction pressure do you use for virgin PTFE preforms?
Virgin preforms are compacted at 20–25 MPa in custom dies fabricated in our in-house toolroom, followed by controlled oven sintering up to 370°C.
Is virgin PTFE suitable for high-pressure valve applications?
Virgin PTFE is suitable for moderate pressures. For very high-pressure service with high wear, filled PTFE grades (such as glass or carbon filled) are recommended to prevent deformation.
Can virgin PTFE balls be sterilized for pharmaceutical use?
Yes. Virgin PTFE balls can be sterilized using autoclave steam, ethylene oxide (EtO), or chemical sterilants without degrading their structure.
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